Man, I would love something like that. Unfortunately we only have chain bookstores here, and you're lucky if they get any release on time.
I'm lucky in that Galaxy is in Sydney and I live in an outer Sydney suburb, and also make a point of traveling into the city every Thursday night (since December 1979) to pick up books from them and comics from a specialist comic shop (which only stopped getting Trek books when Diamond Distributors stopped putting Simon & Schuster publications in the weekly orderpak). But Galaxy has standing orders for customers all over Australia.
Are you not able to find a dependable, efficient science fiction specialist store somewhere in USA
that does mail order?